B&K Precision 5491B - Manual - Manual (Page 63)

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Table 6-8 TRIGger Subsystem Commands Summary
Command Function Description Default
:TRIGger
:SOURce
:SOURce?
Select control source
Query control source
IMMediate
:TRIGger
TRIGger subsystem commands are used for the instrument settings of trigger mode, trigger delay and
triggering a measurement.
:SOURce
Command Syntax:
TRIGger:SOURce
Command parameter:
= IMMediate instrument default setting is internal trigger
BUS Triggered via USB/RS232 interface
MANual (EXTernal) (Press in the front panel for Trigger)
Query:
:SOURce? Query control source
Description:
These are used to select the event control source.
6.3.8 FETCH Subsystem
FETCh? Command
Command syntax:
:FETCh?
Description:
This query command is used to obtain the last available reading. This command does not affect the
configuration of the instrument.
This command does not trigger a measurement. The command simply requests the last available
reading. It will continue to return the same last reading until there is a new reading.
This command will be automatically asserted when :READ? or :MEASure? command is sent.
Trig